When you put two burritos in the microwave, the microwaves emitted by the device do not get split evenly between the two items. The distribution of heat in a microwave oven can be uneven for several reasons:
Uneven placement: If the burritos are not positioned properly in the microwave, one burrito might be closer to the center of the oven, where the microwave energy is more concentrated. This can result in uneven heating.
Varying thickness: If one burrito is thicker than the other or has denser ingredients, it will require more time to heat through. The microwave energy may penetrate one burrito more effectively than the other, leading to uneven heating.
Moisture content: The moisture content of the burritos can affect how they heat up. Microwaves work by exciting water molecules, generating heat. If one burrito has a higher moisture content than the other, it will heat up faster.
Shielding effect: Microwaves can be absorbed or reflected by certain materials, causing uneven heating. For example, if one burrito has a filling or wrapping that contains materials like aluminum foil, it can act as a barrier to the microwaves, preventing efficient heating.
To minimize uneven heating, it's essential to ensure that the burritos are evenly spaced and properly arranged in the microwave. You can also try using a rotating turntable if your microwave has one, as it helps to distribute the heat more evenly. Additionally, flipping or rearranging the burritos midway through the heating process can help promote more uniform heating.